from tkinter import *

coords=[0,0,10,0,10,10,20,10,20,0,30,0,30,20,0,20]

print("Введите начальную координату X:")
X=int(input())
print ("Введите начальную координату Y:")
Y=int(input())
print ("Введите начальную координату N:")
N=int(input())
if N==0 and X>=0 and X<=500 and Y>=0 and Y<=500:
    pass
else:
    if N > 0 and 0*N+X>=0 and 0*N+Y>=0 and 20*N+X<=500 and 20*X+Y<=500:
        pass
    else:
        if N < 0 and 20*N+X>=0 and 20*N+Y>=0 and  0*N+X<=500 and 0*N+Y<=500:
            pass
        else:
            print ("Размер фигуры превышает ммаксимальный размер поля")
            exit ()

root=Tk ()
root.title ("ИТ марафон")
root.geometry ("500x500")
canvas=Canvas (bg="white", width=500, height=500)
canvas. pack (anchor=CENTER,expand=1)
canvas.create_polygon (coords[0] *N+X, coords[1] *N+Y,
                       coords[2] *N+X, coords[3] *N+Y,
                       coords[4] *N+X, coords[5] *N+Y,
                       coords[6] *N+X, coords[7] *N+Y,
                       coords[8] *N+X, coords[9] *N+Y,
                       coords[10] *N+X, coords[11] *N+Y,
                       coords[12] *N+X, coords[13] *N+Y,
                       coords[14] *N+X, coords[15] *N+Y)

root.mainloop ()
